BMW E46 E60 E87 X3 E83 E90 E91 Diesel M47N2 Engine Crankshaft Pulley 7739882

BMW E46 E60 E87 X3 E83 E90 E91 Diesel M47N2 Engine Crankshaft Pulley is an original component from the Pulleys group, designed for BMW M47N2 family diesel engines. This used OEM part ensures a factory-fit to the crankshaft, stable operation of engine accessories, and predictable performance of the auxiliary drive during daily use.

Specifications and technical data

• SKU: 7739882
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7793882
• Substitutable numbers: 11237793882, 7793882, 11237805696, 7805696, 11237801977, 7801977, 11237787304, 7787304, 11232247565, 2247565, 7739882, AS
• Fuel type: Diesel
• Category: Pulleys

Purpose and function of the crankshaft pulley

The crankshaft pulley in the M47N2 diesel engine is responsible for transferring drive from the crankshaft to engine accessories, such as the alternator and other auxiliary components. In BMW E46, E60, E87, and E90 diesel units, stable belt guidance is crucial for smooth operation, reducing torsional vibrations, and maintaining the proper characteristics of the drive system.

Using an original BMW pulley ensures compliance with factory design specifications, which translates into predictable crankshaft loads, proper interaction with the vibration damper, and a lower risk of premature wear of the accessory belt.

Benefits of using an original BMW component

In the case of diesel engines such as the M47N2, the crankshaft pulley operates under significant load and is exposed to variable torque. Choosing an original element from the Pulleys group ensures:

• factory fitment to the crankshaft and accessories,
• maintenance of proper belt guidance geometry,
• correct interaction with the vibration damping system,
• consistency with the design parameters of the BMW power unit.

As a result, the accessory drive system maintains stability, and the risk of incorrect belt tension, noise, or vibrations is minimized. This is particularly important in vehicles used intensively, where repeatability and predictability of drive operation are essential.

Application in M47N2 diesel engines

The presented pulley is designed for Diesel power units from the M47N2 family used in popular BMW 3, 5, and 1 Series models. Using a component that meets factory specifications allows for maintaining proper engine operating parameters, including:

• stable torque transfer to accessories,
• correct interaction with the factory belt system,
• preservation of the operating characteristics typical for M47N2 units.

For users who care about the technical integrity of the drivetrain, choosing an original crankshaft pulley is a safe solution that aligns with the manufacturer's requirements.

Characteristics of the used OEM part

The offered crankshaft pulley is a used OEM BMW part, meaning it comes from factory production and complies with the original assembly specification. Such components are particularly valued by those seeking a balance between cost and maintaining the factory design of the drivetrain.

A used part from the Pulleys group can also be an attractive choice for modernization projects and light mechanical tuning, where the priority is to maintain original geometry and operating parameters while reducing costs compared to new parts.

Crankshaft pulley and tuning/modernization

In projects where the M47N2 diesel engine is subject to modifications, a stable crankshaft pulley is an essential element of the entire system. Proper selection of this component helps maintain smooth accessory operation even under increased loads, which is important for both durability and operational safety.

If you are interested in a broader context regarding the use of second-hand parts in modernization projects, it is worth reading the article on our blog The best used parts for tuning your car, where we discuss a practical approach to selecting second-hand components.

Expanding the BMW accessory drive system

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other elements from the same group, such as additional drive pulleys, idler pulleys, or belt tensioners, check out the available parts in the BMW Pulleys category.